you have to use a proxy, fbi background checks. >> we aren't even really talking about what would really make a difference here. >> background checks would make a difference. i think 90% of most gun violence is done with hand guns. i think 2% -- i read 2% of the gun homicides are done via assault weapons. so if you can stop homicidal maniacs from buying a gun, a hand gun because of a background check i think that would make a difference. >> you think you could find another way to get them but it's a start. >> you talk to mike bloomberg, talk to other people that are champions right now of sensible gun regulation, they will tell you, yes, the assault weapon ban, especially in light of sandy hook, would be a very powerful symbolic victory. i agree. but mike bloomberg and others know if you really want to stop the gun violence not just in sandy hook but in chicago and across america, your best shot is having criminal and mental background checks. >> exactly. i think he also realizes this is the first step in a long process that began with newton but there is an important policy victory at s